Apparatus for annealing malleable-iron castings.



1. H. FBYER. APPARATUS FOR ANNEALING MALLEABLE vIRON CASTINGS;

APPL ICATIONIILED NOV.19, 19H.

Patented Aug. 17, 1915.

Ill!

7 fJA r/a. :5. W/ TNE$55 To all whom it may concern:

JOSEPH HENRY FBYER, OF'GAIJT, ONTARIO; GANAD A i.

' Aryan-mus ronnmvnnnme n uman-mow cnsrmss. 1

- Specification of Letters ratentd h Patented Aug. 17,1915.

'Application filed November 19,1914. seriaino. 872,961. 7

Be it known that I, J osnrn of the town. of Galt, in the county of Water- 100, in the. Province of Ontario, Canada,

have invented certain new and useful Improvements in "Apparatus for Annealing Malleable-Iron Castings, ofwhich the-following is the specification.

1 ings and the object of the in ention is to de-- vise means whereby the formation of scale on theparts annealed-and the warping of such parts during annealing is prevented and it consists essentially of a seriesof open 4 ended containers and intermediatehermeticclosures for the openends of the containers f rounding mb 5..

- The plate -7 is provided with exterior up:

extending flanges 7 12 an 13 are fillings of clay or f-other by the following.specification.

My invention relates to improvements in apparatus for annealing malleable iron castas hereinafter more particularly explained Figure 1-, is azperspective viewshowing a vertical series of containers and intermediate closures." Fig. 2, is a vertical. section ig. 1.-- Fig. 3, is a plan -section'on line w-y Fig.'2.'

through In the drawings like letters of reference indicate corresponding-parts ineach figure.

1, 2' and 3 are a'serles of open ended con tainers.

4 is base plate provided with a surrounding fla'n'ge 5 extending upwardly therefrom "around its outer edge. The

- lowermost container 1 rests onthe base plate 4-so as to leave a small surrounding space between the outer face of the wall of the I container and the 1111161; face. of the sur- 6 is a fillmg of c1ay1or other suitable ma terial inserted between the rib -5ja'nd' ='jthe lower edge of the container 1. 8 is asimilar J 9f clay inserted around the lower interior edgefof the container upon the plate 4. By this means an airtight joint filling is formed between the lower edge of the container andthe plate; v I

7 and 16 are plates inserted respectively between the containersl 'and'2 and-2 and 3.

wardly and downwardl 9 and 10 similar to the fl ange 5 hereinbefore described iii-connection with .the plateyl."

' 11,.isa downwardlyextending flange ex- "tending from-the plate 7 and designed to fitthe 11 per end of the container 1.

HENRY Emma will hereinafter appear.

'- suitable material insertedbetween the flange 9 and lower edge of the container 2 and the flange 10 and upper edge of the container 1.

. is a similar filling of clay inserted against the nterlorlower edge of the plate 2' and. res'tlng onthe plate 7 By this means air tight .joint is formed between the containers 1 and 2. {The plate'7'is provided with a central orifice 15 for a purpose which 16 is a plateslmilar to thefpla te 7 with the exception that it i's-a solid plate having nocentral orificesiinilar to the'orifice 15. i

The plate l6 '.is inserted between the con- 4 tainers '2 and 3 andis provided with a cor- 'espondin'g' clay filling to form an air tight o1nt. I

17-1s"a cover plate designed to. fit over the uppermost container, The cover plate-17 is provided with an interior depending flange '18 fitt1ng withlnfthe container 3 and a depending flange 19 spaced slightly away from the outerfaceofgthe container 3. 20 is a clay filling inserted between the flange l9 and the wall of the container 3.

. By means hitherto employed the open ended containers have been arranged in verticaltiers one above the other, the castings or other parts to be treated being inserted in the container and surrounded by suitable pack ng such as sand. It will be readily understood thatwhenthe'r stings are subected to great heat and are. softened thereby that they are liable to warp under pressure lot the load'of the. filling'and castings con tained by the superimposed containers, the lower containers being subjected to great pressure than the upperc'ontainers. Furthermore'air circulates through. the jointsv between the containers 311(10011183 into con-c tact with the surfaceof the castings producing a scaly surface which has to be re moved-by machining after the' annealing process has been completed. This it will be readily seen involves a great deal of time and labor particularly i'n intricate small castings where interior angles have to be cleaned of this scale.

vented and the'necessity for, the .-'use. of fill- 4 By arranging mycontainers as above ,described with ntervening hermetic. closures the' actlon of the an on. the closures-1s preing is obviated and consequently the cast ing's do not become covered withscale and there is less tendency for the castings to "erp as the lower castings neither have to carry the loacl ot the filling nor of the upper castings. By my arrangement the castings of each container are carried by the uiiclerlying dividii-nsclosure plate, such as the plate 16 insertetl between the containers 2 and vfirsv before described I have provided a central opening 15' in the plate 7. This is for the purpose of forming the containers 1 and 2 into practically one container so as to allow of the insertion of a very long casting cart-tings is prevented producing-a much better result. A 4

What I claim as my invention is.

An apparatus" for annealing malleable iron castings' comprising a plurality of open ended containers set one upon the other, a

base plate on which the lowermost .'contner rests, a su table filling carried by the i.

of the container, a plate having central orifice interposed. between each of. the containers, a suitable filling carried by the plate against the Walls of the containers, and an hermetic closing plate for the top of the uppermost container as and for the pur-' pose specified.

y JOSEPH HENRY FRYER. Witnesses:

E VENNoCK, lvi. EG NQ Jase .ila'te ancl surro'i'mdiiw the lower-'ed e 

